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<div role="main"><h1>Debugging a program</h1>

<p>You must create a debug launch configuration the first time you debug your 
program.</p>

<p>To create a debug configuration:</p>

<ol>
  <li>In  C/C++ Projects view, select a project. 
  </li>
  <li>Click <strong>Run &gt; Debug</strong>.</li>
  <li>In the Debug dialog box, select a debug configuration type from the <strong>Configurations</strong> 
  list.</li>
  <li><p>Click <strong>New</strong>.</p></li>
  <li>In the <strong>Name</strong> box, type a descriptive name for this debug configuration.</li>
  <li>In the <strong>Project</strong> box, type the name of the project containing 
        the application you want to debug.</li>
  <li>In the <strong>C/C++ Application</strong> box, type the name of the executable 
        that you want to run.</li>
  <li>Click <strong>Debug</strong>.<br><br>
  <p>The debug perspective is opened and the  application window opens on 
  top. The C/C++ editor window is repositioned in the perspective.</p></li>
</ol>

<p>For more information:</p>
<ul><li>To specify the 
    execution arguments an application uses and the working directory for a run 
    configuration, see <a href="cdt_t_run_arg.htm">Specifying execution arguments</a>.</li><li>To set the environment variables 
    and values to use when an application runs, see <a href="cdt_t_run_env.htm">
    Setting environment variables</a></li>
  <li>To select a debugger to use when debugging an application, see
  <a href="cdt_t_run_dbg.htm">Selecting a debugger</a></li>
  <li>To specify the location of source files used when debugging a C or C++ 
  application, see <a href="cdt_t_run_source.htm">Specifying the location of 
  source files</a></li>
  <li>To specify where the run configuration is stored, how you access it and 
  what perspective to open when running an application, see
  <a href="cdt_t_run_com.htm">Specifying the location of the run configuration</a></li></ul>

<p>To use a debug configuration:</p>

<p>You can reuse a previously created debug launch configuration to debug your 
program.</p>

<ol>
  <li>Click <strong>Run &gt; Debug</strong>.</li>
  <li>In the Debug dialog box, select a debug configuration from the Configurations 
  list.</li>
  <li>Click <strong>Debug</strong>. </li>
</ol>

<p><img src="../images/ngconcepts.gif" ALT="Related concepts" width="143" height="21">
<br>
<a href="../concepts/cdt_c_over_dbg.htm">Debug overview</a><br>
<a href="../concepts/cdt_c_dbg_info.htm">Debug information</a></p>
<p><img src="../images/ngtasks.gif" ALT="Related tasks" width="143" height="21">
<br>
<a href="cdt_o_debug.htm">Debugging</a></p>
<p><img src="../images/ngref.gif" ALT="Related reference" width="143" height="21">
<br>
<a href="../reference/cdt_o_run_dbg_pages.htm">Run and Debug dialog box</a></p>
<img src="../images/ng00_04a.gif" ALT="IBM Copyright Statement" >

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